S-8077A373 10-32 ASME B18.3 Shoulder Screws
Shoulder Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments and extended service life.
- Exceptional mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for reliable performance under high stress.
- Precise alignment and secure positioning ensured by the 3" shoulder with controlled diameter and length tolerances.
- Enhanced grip and reduced tool slippage from the knurled socket head with a standard 1/8" hex drive.
- Accurate and secure fastening with a 10-32 UNF fine thread and Class 3A fit for tight, vibration-resistant connections.
- Improved durability and minimal galling provided by the black oxide finish on the stainless steel surface.
- Compliance with industry standards including ASME B18.3, RoHS 3, and REACH for guaranteed quality and environmental safety.
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw is engineered to address critical challenges in precision assemblies, such as maintaining alignment in rotating machinery, securing components in conveyor systems, and providing pivot points in linkages. The black oxide finish enhances corrosion resistance, reducing maintenance in humid or chemically aggressive settings. With a 10-32 UNF fine thread and Class 3A fit, it ensures minimal backlash and high clamping force, vital for applications requiring vibration resistance and positional accuracy. The 3-inch shoulder acts as a precise spacer or axle, eliminating the need for additional bushings and simplifying assembly in industries like automation, aerospace, and medical equipment manufacturing.
Specification Summary & Compliance
This shoulder screw features a 10-32 UNF fine thread with Class 3A thread fit for high precision. The shoulder diameter is 1/4" with a tolerance of -0.004" to -0.002", and the shoulder length is 3" with a tolerance of -0.005" to 0.005". It is manufactured to meet ASME B18.3 specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to international quality and environmental standards.
